<template>
  <div class="app-container">

    <!-- 顶部 Header 区域 -->
    <mt-header fixed title="黑马程序员.Vue项目">
      <span @click="goBack()" slot="left" v-show="flag">
        <mt-button icon="back">返回</mt-button>
      </span>
    </mt-header>

    <!-- 中间 路由 router-view 区域 -->
    <transition>
    <router-view></router-view>
    </transition>

    <!-- 底部 Tabbar 区域 -->
    <nav class="mui-bar mui-bar-tab">
      <router-link class="mui-tab-item-n" to="/home">
        <span class="mui-icon mui-icon-home"></span>
        <span class="mui-tab-label">首页</span>
      </router-link>
      <router-link class="mui-tab-item-n" to="/member">
        <span class="mui-icon mui-icon-contact">
          
        </span>
        <span class="mui-tab-label">会员</span>
      </router-link>
      <router-link class="mui-tab-item-n" to="/shopcar">
        <span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span></span>
        <span class="mui-tab-label">购物车</span>
      </router-link>
      <router-link class="mui-tab-item-n" to="/search">
        <span class="mui-icon mui-icon-search"></span>
        <span class="mui-tab-label">搜索</span>
      </router-link>
    </nav>
  </div>
</template>

<script>
  export default{
    data(){
      return{
        flag:false
      }
    },
    created(){
      // if(this.$route.path=='/home'){
      //   this.flag=false
      // }else{
      //   this.flag=true
      // }
      this.flag = this.$route.path === '/home'?false:true
    },
    methods:{
      goBack(){
        this.$router.go(-1)
      }
    },
    watch:{
      '$route.path':function(newVal){
        if(newVal == '/home'){
          this.flag = false
        }else {
          this.flag = true
        }
      }
    }
  }
</script>


<style lang="scss" scoped>
  .app-container{
    padding-top: 40px;
    padding-bottom: 50px;
    overflow-x: hidden;
  }
  .v-enter{
    opacity: 0;
    transform: translateX(100%);
  }
  .v-leave-to{
    opacity: 0; 
    transform: translateX(-100%); 
    position: absolute;
  }
  .v-enter-active,.v-leave-active{
    transition: all 0.5s ease
  }
  .mui-bar-tab .mui-tab-item-n.mui-active {
    color: #007aff;
  }
  .mui-bar-tab .mui-tab-item-n {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}
.mui-bar-tab .mui-tab-item-n .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-n .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
</style>
